Ratio Pressure Reducing Valve
Ratio Pressure Reducing Valve

ACV Ratio Reducing Valve

Surge Vessels & Storage Tanks
Titanium Direct Acting Pressure Reducing Valve

Spec Sheet: Alpine ACV Ratio Reducing Valve

Additional: Alpine Safe Pressure Reducing Station

Other: The Benefits of Using Fixed Ratio Reducing Valves for Surge and Water Hammer Elimination

ACV Ratio Reducing Valves have been in use in the Mining Industry and in some overseas countries in High Rise Buildings for many years. The concept of a Self-actuated Pressure Reducing valve without pilots is new to the Water Industry, as well as the General  Building industry. The fact that the valve is non-adjustable has often been seen as a reason to not utilize this valve in many applications, but when one considers if adjustability is really necessary and the many advantages offered by this valve, more and more users prefer the RPRV over the standard Pilot Operated Pressure Reducing valves (POPRV).

Operation explained:
The valve operates on the principle of different surface areas between the inlet and outlet of the valve. This gets carefully calculated keeping in mind the dynamic effects of velocity and pressure drops
over the area of the seat. The piston is affected by pressure forces on the different areas and moves the piston either more open or more closed. When demand is zero the valve closes drop-tight.

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Description

ACV Ratio Reducing Valve

Hydraulics Simplified
Because the Ratio Pressure Reducing Valve (RPRV) is of an inline Axial flow design, it has all the benefits of
• High Cavitation resistance (5:1 ratios available)
• Fast response – almost instantaneous response to demand changes
• High range-ability and can control down to very low flow rates

Due to these features, the Ultra RPRV can operate in series with other control valves without experiencing instability, and also would not require bypass PRV’s to cater for low flow periods. Sizing and application Engineering thus becomes simplified. If in doubt just install a line size RPRV in any position where pressure needs to be reduced without doing complicated sizing.

Fast and Easy installation
The RPRV has a compact design, which makes it ideal for tight spaces such as fire installations and plumbing in High Rise buildings. They can be installed in any orientation.

Complete security
• Fixed Ratio. No need for adjustments or calibration
– the valve settings are fixed and cannot change with time.
• Simple sealing action. Because the valve relies on only one moving part, means high reliability and shutoff when required. There are no internal ports, which can become blocked, or springs that can become corroded or damaged.
• Maintained Pressure. Under no-flow conditions, the downstream pressure is maintained because the valve will remain closed and will not open until the downstream pressure drops.
• Ease of maintenance. Can be handled by one person. This valve generally only needs servicing once every 3 to 5 years. Service kits include standard seals and O-rings, which are readily available.
• Tamper proof. There are no external regulators or pilot tubes, which can be tampered with.
• Leakages from Control tubing which is always a problem in buildings is eliminated
• No need to bleed air from the control chamber.

High Performance
One moving part and only 2 O-ring seals and 1 main seal results in many years of trouble-free operation without the maintenance required.

ACV Ratio Reducing Valves

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